Question

what is the name of the fluid found inside the synovial cavity?
synovial fluid
cerebral spinal fluid
serous fluid
vitreous humor
question 6
3 pts
what are the movements involved when you shrug your shoulders? select all answers that apply.
elevation
protraction
depression
retraction
flexion

Explanation:

• Synovial fluid: It is the fluid present in the synovial cavity of synovial joints. It lubricates the joint and provides nutrients to the articular cartilage.
• Cerebral spinal fluid: Found in the sub - arachnoid space of the brain and spinal cord, not in the synovial cavity.
• Serous fluid: Lines body cavities like the pleural, pericardial, and peritoneal cavities, not the synovial cavity.
• Vitreous humor: Found in the posterior chamber of the eye, not in the synovial cavity.

For the shoulder shrug:

• Elevation: Shrugging the shoulders involves lifting the scapula upwards, which is elevation.
• Depression: After shrugging (elevation), bringing the shoulders back down is depression. But a simple shrug (the upward movement) is mainly elevation. Pro - traction (moving the scapula forward), retraction (moving the scapula backward), and flexion (bending a joint in the anterior - posterior plane, not the main movement in a simple shrug) are not the primary movements in a basic shoulder shrug.

Answer:

• First question: Synovial fluid
• Second question: Elevation